Conference paper
Lipid metabolism in skeletal muscle of broiler chickens after fattening period and fasting
Blanka Beer Ljubić
orcid.org/0000-0003-3734-4248
; Zavod za fiziologiju i radiobiologiju, Veterinarski fakultet Sveučilišta u Zagrebu, Heinzelova 55, 10000 Zagreb
Suzana Milinković Tur
; Zavod za fiziologiju i radiobiologiju, Veterinarski fakultet Sveučilišta u Zagrebu, Heinzelova 55, 10000 Zagreb
Jasna Piršljin
; Zavod za fiziologiju i radiobiologiju, Veterinarski fakultet Sveučilišta u Zagrebu, Heinzelova 55, 10000 Zagreb
Maja Zdelar-Tuk
; Zavod za fiziologiju i radiobiologiju, Veterinarski fakultet Sveučilišta u Zagrebu, Heinzelova 55, 10000 Zagreb
Abstract
The purpose of this study was to investigate the effect of fasting on lipid concentrations and lipoprotein lipase activity in breast and thigh muscle of Ross 308 broiler chickens. Muscle tissue samples were collected at the age of 42 days and after 48 hours food deprivation and triacylglycerol, cholesterol and lipid peroxide concentrations and lipoprotein lipase activity were assayed. After fattening period, triacylglycerol concentrations (p<0,05) and lipoprotein lipase activity (p<0,05) in chicken thigh muscle were higher compared with breast muscle. Fasting significantlydecreasedtriacylglycerols(p<0,05)and cholesterols (p<0,05) and increased lipid peroxidation (p<0,05) in thigh muscle of chickens. At the same time, lipid peroxidation intensity significantly decreased (p<0,05) inbreast muscle. Lipoprotein lipase activity in breast muscle significantly increased (p<0,05 )whereas in thigh muscle decreased (p<0,05) after fasting. The results of this study confirm the differences in lipid metabolism of breast and thigh muscle of chickens. Thigh muscle has higher triacylglycerol concentrations and lipoprotein lipase activity after fattening period but after fasting lipid content of the thigh muscle decrease whereas susceptibility of muscle to lipids peroxidation increase.
Keywords
chicken; triacylglycerols; cholesterol; lipoprotein lipase; skeletal muscle; fasting
Hrčak ID:
21276
URI
Publication date:
15.8.2007.
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